CN115137090A - Blended sun-cured yellow tobacco leaf and method for screening or preparing blended sun-cured yellow tobacco leaf - Google Patents
Blended sun-cured yellow tobacco leaf and method for screening or preparing blended sun-cured yellow tobacco leaf Download PDFInfo
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/08—Blending tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/16—Classifying or aligning leaves
Abstract
The invention discloses blended tobacco leaves and a method for screening or preparing blended tobacco leaves of sun-cured yellow tobacco. The blended tobacco provided by the invention can improve the overall quality of yellow sun-cured tobacco, particularly, the chemical components are more coordinated, and the smoking sense of the prepared tobacco product is better. Can relieve the shortage problem of high-quality flue-cured tobacco leaf raw materials and improve the effective utilization rate of the sun-cured yellow tobacco leaf.
Description
Technical Field
The invention belongs to the technical field of tobacco, and particularly relates to sun-cured yellow tobacco blended tobacco leaves and a method for screening or preparing sun-cured yellow tobacco blended tobacco leaves.
Background
The yellow sun-cured tobacco is an important raw material of the blended type cigarette. At present, domestic yellow sun-cured tobacco is divided into 10 grades according to the provisions of a standard YC/T484.1-2013, the standard difference of the yellow sun-cured tobacco grade is larger compared with 42 grades of flue-cured tobacco, the yellow sun-cured tobacco is also a characteristic raw material of flue-cured tobacco type cigarettes, and the yellow sun-cured tobacco also becomes an important raw material for heating non-combustible products along with the development of novel tobacco. The local sun-cured tobacco in China has a long planting history, rich resources, wide distribution and obvious quality style characteristics, is rich raw material resources of Chinese cigarettes, and has potential development advantages. Some yellow sun-cured tobaccos have obvious fragrance and sufficient fragrance, and can be used for replacing flue-cured tobaccos in cigarette formulas. The industries of Shanghai, sichuan, anhui, henan and the like add sun-cured tobacco to the flue-cured tobacco type cigarettes to develop low-tar cigarette products, which are popular with consumers. The yellow sun-cured tobacco has the functions of flavoring, seasoning, tar reduction and the like, can obviously improve the sensory quality of cigarettes, has lower purchase cost, can obviously reduce the use of expanded cut tobacco, cut stems and thin sheets, and can also be used as natural tobacco source spice.
Yellow sun-cured tobacco has more varieties, the difference between different varieties is larger, the grade difference is larger, the sensory quality uniformity in partial grades is poorer, and the use of yellow sun-cured tobacco is seriously influenced. At present, the problem of shortage of high-quality tobacco leaf raw materials needs to be relieved urgently, and meanwhile, a method which is simple and convenient to operate and capable of being industrially popularized in actual industrial production and effectively utilizes the classified use of sun-cured yellow tobacco leaves is needed, so that the quality stability of the sun-cured yellow tobacco leaves is improved, the synergistic use of the tobacco curing raw materials is realized, and the sensory quality stability of cigarettes is further improved.
Disclosure of Invention
In order to solve the problems that the sensory quality uniformity is poor in the yellow sun-cured tobacco grade and the shortage of high-quality tobacco leaf raw materials is relieved, the inventor obtains the yellow sun-cured tobacco blended tobacco leaf through a large number of experiments. The blended tobacco leaf can improve the overall quality of yellow sun-cured tobacco leaves, particularly, chemical components are more coordinated, and the tobacco products prepared from the blended tobacco leaf have better smoking sense. Can relieve the shortage problem of high-quality flue-cured tobacco leaf raw materials and improve the effective utilization rate of the sun-cured yellow tobacco leaf.
Accordingly, in a first aspect, the present application provides a yellow sun cured blended tobacco leaf comprising a blend of tobacco leaves having a weight ratio of 6:4, and the first tobacco leaf and the second tobacco leaf are obtained by further classifying the tobacco leaves of any one grade of standard grades C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2 of the yellow sun-cured tobacco according to the colors of the tobacco leaves; and, the first leaf of tobacco is selected from the group consisting of a light yellow, positive yellow, gold yellow, or any combination thereof; the second tobacco leaf has a color selected from the group consisting of dark yellow, brown yellow, or any combination thereof.
In certain embodiments, the first tobacco leaf is a combination of a light yellow, positive yellow, and golden yellow color. In certain embodiments, the second tobacco leaf is a combination of dark yellow and brown-yellow in color. In certain embodiments, the first tobacco leaf is yellowish, positive yellow or golden in color. In certain embodiments, the second tobacco leaf is dark yellow or brownish yellow in color.
In certain embodiments, the sun-cured yellow tobacco blended leaf as previously described, the first and second tobacco leaves having a leaf grade of B3 or C3.
In certain embodiments, a yellow sun cured blended tobacco leaf as described above, the blended tobacco leaf comprising a blend of tobacco leaves having a weight ratio of 6:4, the first and second tobacco leaves having a leaf rating of B3, and the first tobacco leaf having a color selected from the group consisting of light yellow, positive yellow, gold yellow, or any combination thereof; the second tobacco leaf has a color selected from the group consisting of dark yellow, brown yellow, or any combination thereof.
In certain embodiments, a yellow sun cured blended tobacco leaf as described above, the blended tobacco leaf comprising a blend of tobacco leaves having a weight ratio of 6:4, the first and second tobacco leaves having a leaf rating of C3, and the first tobacco leaf having a color selected from the group consisting of light yellow, positive yellow, gold yellow, or any combination thereof; the second tobacco leaf has a color selected from the group consisting of dark yellow, brown yellow, or any combination thereof.
In certain embodiments, the cured yellow tobacco blended lamina as described above, wherein the blended lamina further comprises cured tobacco lamina.
In certain embodiments, the flue-cured tobacco leaf is a yunnan Daliyun 87 variety flue-cured tobacco leaf of grade C3F, B2F or X2F.
In certain embodiments, the flue-cured tobacco leaf is a yunnan Daliyun 87 variety flue-cured tobacco leaf of grade C3F.
In certain embodiments, the compounded tobacco leaf comprises 3:7 the sun cured yellow tobacco blended tobacco leaf of claim 3 and a Yunnan Daliyun 87 variety flue-cured C3F grade flue-cured tobacco leaf.
In another aspect, the present application provides a cigarette comprising compounded tobacco leaf as described previously.
In another aspect, the present application provides the use of compounded tobacco leaves as hereinbefore described in the preparation of cigarettes or cigarettes.
In another aspect, the present application provides a method of screening or preparing compounded tobacco leaves for sun-cured yellow tobacco, the method comprising:
(1) Providing a sample of sun-cured yellow tobacco leaves, wherein the sample of the tobacco leaves is selected from any one grade of standard grades C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2 of the sun-cured yellow tobacco;
(2) Further classifying the tobacco leaf samples of the same grade into a first tobacco leaf and a second tobacco leaf according to the color of the tobacco leaves, wherein the color of the first tobacco leaf is selected from light yellow, positive yellow, golden yellow or any combination thereof; the second tobacco leaf is selected from a dark yellow color, a brown yellow color, or any combination thereof;
(3) Mixing the first tobacco leaves and the second tobacco leaves in different weight ratios, and performing chemical component analysis and/or sensory quality evaluation on the obtained mixed tobacco leaves;
(4) And determining the proportion (for example, the weight ratio) of the first tobacco leaves and the second tobacco leaves according to the required chemical component analysis values and/or sensory quality evaluation values, namely screening or preparing the blended tobacco leaves of the sun-cured yellow tobacco.
In another aspect, the present application provides a method of screening or preparing yellow sun cured blended tobacco leaves as hereinbefore described, the method comprising:
(1) Providing a yellow sun-cured tobacco leaf sample, wherein the tobacco leaf sample is selected from any one grade of standard yellow sun-cured tobacco grading C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2;
(2) Further classifying the tobacco leaf samples of the same grade into a first tobacco leaf and a second tobacco leaf according to the color of the tobacco leaves, wherein the color of the first tobacco leaf is selected from light yellow, positive yellow, golden yellow or any combination thereof; the second tobacco leaf is selected from a dark yellow color, a brown yellow color, or any combination thereof;
(3) Mixing the first and second tobacco leaves in a ratio of 6:4 (e.g., weight ratio); namely screening or preparing the yellow sun-cured tobacco mixed tobacco leaves.
In certain embodiments, the method as previously described, the chemical component is selected from total nitrogen, nicotine, total sugar, reducing sugar, potassium, chlorine, or any combination thereof; the sensory quality assessment is selected from scent quality, scent amount, penetrability, miscellaneous gases, concentration, strength, fineness, lumping, irritation, dry feeling, cleanliness, rewweet, or any combination thereof.
In certain embodiments, the first and second tobacco leaves have a tobacco grade of B3 or C3 as in the previously described methods.
Interpretation of terms:
in the present invention, the term "cured tobacco" refers to tobacco that is cured in a curing barn by using artificially controlled heat energy during the process of curing the tobacco.
In the invention, the term "yellow sun-cured tobacco" refers to tobacco leaves which are sun-cured by utilizing the radiation heat energy of the sun in the process of preparing the tobacco leaves. Yellow sun-cured tobacco is prepared according to the first part of yellow sun-cured tobacco in the tobacco industry Standard of the people's republic of China (YC/T484.1-2013): the classification technique requires classification, which is divided into 10 classes of C1, C2, C3, X1, X2, B1, B2, B3, F1 and F2, and is classified mainly according to indexes such as leaf structure, oil content, gloss, identity, length, and the like. In the "standards for the tobacco industry of the people's republic of china" (YC/T484.1-2013), the following are disclosed: "develop normally" and the color of the yellow sun-cured tobacco includes light yellow, positive yellow, golden yellow, dark yellow and brownish yellow. ".
In the present invention, the term "light lime" means that the surface of the tobacco leaves is light yellow.
In the present invention, the term "yellow" means that the surface of the tobacco leaves shows pure yellow.
In the present invention, the term "bright yellow" means that the surface of the tobacco leaves is mainly yellow and has obvious visible gold color.
In the present invention, the term "dark yellow" means that the surface of the tobacco leaves is darker and the red color is obvious.
In the present invention, the term "brownish yellow" means that the surface of the tobacco leaves is brown and has a clearly visible yellow color.
Has the advantages that:
the yellow sun cured tobacco blended tobacco provided by the invention can improve the overall quality of yellow sun cured tobacco, particularly, the chemical components are more coordinated, and the smoking sense of the prepared tobacco product is better. Can relieve the shortage problem of high-quality flue-cured tobacco leaves and improve the effective utilization rate of the sun-cured yellow tobacco leaves. Meanwhile, the method provided by the invention can be used for automatically preparing the targeted sun-cured yellow tobacco leaves according to the required chemical components or smoking sense, is simple and convenient to operate and is suitable for industrial popularization.
Furthermore, the blended sun-cured tobacco leaves are blended with the flue-cured tobacco again, and the obtained blended tobacco leaves have the advantages of the flue-cured tobacco leaves and the sun-cured tobacco leaves, have high smoking sensory experience, and are suitable for further processing.
Drawings
FIG. 1 is an example leaf of a dark leaf in the B3 grade of sun-cured yellow tobacco leaf, i.e., B3 RS.
Fig. 2 is an example leaf of a dark leaf, i.e., C3RS, in a C3 grade of sun-cured yellow tobacco leaf.
FIG. 3 is an example leaf of a light-colored leaf in the B3 grade of sun-cured yellow tobacco leaves, i.e., B3FS.
FIG. 4 is an example leaf of a light-colored leaf in the C3 grade of sun-cured yellow tobacco leaf, i.e., C3FS.
Detailed Description
The technical solution of the present invention is further described in detail by the following examples. The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and do not constitute a limitation of the present invention. The raw materials used in the invention are all common raw materials which can be purchased; the equipment is the general equipment that can purchase. The described embodiments are only some embodiments of the invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1 yellow sun Smoke Classification
Taking sun-cured yellow tobacco (Yunan De hong Yun sun-cured No. 1, near flue-cured tobacco type sun-cured yellow tobacco) purchased in 2021 and flue-cured tobacco (Baoshanyun 85 variety, fen-flavor tobacco leaf), blending, and then carrying out tobacco leaf grading according to YC/T484.1-2013 standard and national standard GB2635-92 respectively to obtain sun-cured yellow tobacco B3 and C3 grade tobacco leaves; flue-cured tobaccos of B3F, B3K, C4F and CX2K grades.
Pretreatment: the tobacco leaves of B3 and C3 grades are standard sample tobacco leaves, a plurality of complete leaves of the tobacco leaves of B3 and C3 grades are taken, and each grade is divided into two types according to the color. Specifically, dark-color leaves (the leaves are dark yellow and brown yellow, and the specific colors are shown in fig. 1) in B3 are selected and classified into one type and named as B3RS, and light-color leaves (the leaves are light yellow, positive yellow and golden yellow, and the specific colors are shown in fig. 3) in B3 are selected and classified into one type and named as B3FS; dark leaves in C3 (the leaves are dark yellow and brown yellow, and the specific colors are shown in figure 2) are selected to be classified into one type and named as C3RS, and light leaves in C3 (the leaves are light yellow, bright yellow and golden yellow, and the specific colors are shown in figure 4) are selected to be classified into one type and named as C3FS. The weight contents of the conventional chemical components of each cut piece were measured using a continuous flow chemical analyzer, and the results are shown in table 1.
TABLE 1 Classification of conventional chemical constituents of yellow sun-cured tobacco
| Sample information | Total nitrogen | Nicotine | Total sugar | Reducing sugar | Potassium salt | Chlorine |
| C3RS | 2.33 | 3.79 | 22.40 | 19.70 | 3.39 | 0.33 |
| C3FS | 1.47 | 1.47 | 35.70 | 32.10 | 3.45 | 0.06 |
| B3RS | 2.26 | 2.65 | 23.70 | 21.70 | 1.97 | 0.19 |
| B3FS | 1.71 | 1.87 | 29.30 | 26.20 | 2.02 | 0.11 |
As can be seen from table 1, the difference in the chemical composition between C3RS and C3FS was large even in the same class of C3. The total nitrogen, nicotine and chlorine contents of C3RS are all higher than that of C3FS, and the total sugar and reducing sugar of C3RS are lower than that of C3FS. Similarly, the conventional chemical compositions of B3RS and B3FS are also significantly different under the same B3 classification. The total nitrogen, nicotine and chlorine contents of B3RS are all high as those of B3FS, and the total sugar and reducing sugar of B3RS are lower than those of B3FS.
The total sugar weight content and the reducing sugar weight content of the tobacco leaves of grades B3, C3, B3F, B3K, C4F and CX2K were measured using a continuous flow chemical analyzer, and the weight ratio of reducing sugar to total sugar was calculated, with the results shown in Table 2.
TABLE 2 conventional chemical composition for each grade of yellow sun-cured tobacco and flue-cured tobacco
| Sample information | Total nitrogen | Nicotine | Total sugar | Reducing sugar | Potassium salt | Chlorine |
| C3 | 1.61 | 1.69 | 32.23 | 27.75 | 2.84 | 0.04 |
| B3 | 2.03 | 2.44 | 32.79 | 24.74 | 2.33 | 0.15 |
| C4F | 2.03 | 2.93 | 33.7 | 28.6 | 1.85 | 0.05 |
| B3F | 2.33 | 3.37 | 29.6 | 26.4 | 1.48 | 0.05 |
| CX2K | 3.24 | 3.37 | 17.1 | 14.2 | 1.95 | 0.37 |
| B3K | 2.70 | 4.44 | 24.5 | 21.9 | 1.22 | 0.05 |
The difference between the conventional chemical compositions of C3RS and C3FS and the conventional chemical compositions of the original C3 can be seen by combining the table 1, and the conventional chemical compositions of C3RS and C3FS are both different from each other, which shows that the conventional chemical compositions of different blades in the C3 grade are different greatly. The chemical composition difference between B3RS and B3FS and the original B3 is large, and the conventional chemical compositions of B3 are both between the two, which shows that the chemical composition difference of different blades in the B3 grade is large.
Meanwhile, after the yellow sun-cured tobacco is classified, the proportion of nicotine, total nitrogen, potassium and chlorine of C3RS is higher than that of C3, the content of reducing sugar and total sugar is lower than that of C3, the proportion of nicotine, total nitrogen, potassium and chlorine of C3FS is lower than that of C3, and the content of reducing sugar and total sugar is higher than that of C3; the proportions of nicotine, total nitrogen, potassium and chlorine of B3RS are all higher than those of B3, the contents of reducing sugar and total sugar are all lower than those of B3, the proportions of nicotine, total nitrogen, potassium and chlorine of B3FS are all lower than those of B3, and the contents of reducing sugar and total sugar are all higher than those of B3. The tested flue-cured tobacco has lower grade, poorer harmony of chemical components, higher content of the nicotine of CX2K grade and B3K grade and poorer quality of the integrated alkali.
In conclusion, the tobacco leaves in B3 and C3 grades of yellow sun-cured tobacco have larger chemical component difference, and the uniformity of the sensory quality of the cigarettes is poorer after the tobacco leaves are prepared into the cigarettes, so that the quality of the cigarettes is seriously influenced.
Therefore, in order to prepare tobacco leaves with more harmonious chemical components and better smoking sense, the tobacco leaves of each classification are mixed according to weight ratio and the chemical components of the mixed tobacco leaves are tested.
The concrete mixing manner and the proportion (weight ratio) are shown in the following tables 3 and 4.
TABLE 3 conventional chemical composition for C3-grade blending of sun-cured tobacco
TABLE 4 conventional chemical composition for B3 grade blending of sun cured tobacco
As can be seen from tables 3 and 4, C3RS: C3FS and B3RS: B3FS are in the ratios of 6:4, the ratio of sugar to alkali is about 8-10, the ratio of nitrogen to alkali is close to 1, and the ratio of potassium to chlorine is close to 4-10. And the chemical components are more harmonious than the rest proportion. Under the condition that the tobacco leaf resources are in daily use, the proportioned tobacco leaves obtained by the method can relieve the problem of shortage of tobacco leaf raw materials, and the classification and blending mode of the yellow sun-cured tobacco is convenient to operate and is suitable for industrial popularization.
Example 2 sensory quality evaluation
And C3, B3, C3RS, C3FS, B3RS and B3FS are made into cigarettes according to a conventional method. The sensory quality of each cigarette was evaluated by 7 sensory quality professional smokers according to the industry standard YC/T415-2011 "sensory evaluation method for tobacco products", and the results are shown in Table 5.
TABLE 5 sensory quality score of each grade of yellow sun-cured tobacco
| Index (I) | C3 | B3 | C3RS | C3FS | B3RS | B3FS |
| Quality of fragrance | 5.6 | 5.4 | 5.5 | 6.1 | 5.0 | 5.8 |
| Amount of fragrance | 6.2 | 5.6 | 6.3 | 5.5 | 5.3 | 6.4 |
| Penetrability of hair | 6.6 | 6.0 | 5.9 | 6.5 | 5.3 | 6.3 |
| Miscellaneous qi | 6.1 | 5.5 | 5.8 | 6.5 | 5.5 | 6.0 |
| Concentration of | 6.5 | 6.5 | 6.7 | 5.5 | 7.3 | 6.0 |
| Stiff head | 6.0 | 6.5 | 6.4 | 6.0 | 6.8 | 6.0 |
| Degree of fineness | 6.2 | 5.9 | 6.3 | 6.5 | 5.4 | 5.5 |
| Property of agglomeration | 5.8 | 6.0 | 6.2 | 5.7 | 6.0 | 5.4 |
| Irritation property | 6.0 | 6.0 | 5.4 | 6.0 | 6.3 | 5.9 |
| Feeling of dryness | 6.5 | 5.4 | 5.5 | 6.2 | 5.3 | 6.0 |
| Degree of cleanliness | 6.0 | 5.5 | 5.3 | 6.6 | 5.3 | 6.0 |
| Sweet back | 6.2 | 5.6 | 5.6 | 6.4 | 5.5 | 6.0 |
As can be seen from table 5, the yellow sun-cured tobacco classifications (i.e., C3RS, C3FS, B3RS, and B3 FS) obtained by the method of the present application were significantly different from the original grades (i.e., C3 and B3) in the sensory quality evaluation. And moreover, the conditions of all sensory quality scores are integrated, so that the classification use value significance of the yellow sun-cured tobacco is higher, and the sensory quality score of each flue-cured tobacco grade is lower.
Further, the tobacco leaves of all grades are mixed according to the weight ratio and are made into cigarettes according to a conventional method.
The sensory quality of each cigarette was evaluated by 7 sensory quality professional smokers according to the industry standard YC/T415-2011 "sensory evaluation method for tobacco products", and the results are shown in tables 6 and 7.
TABLE 6 sensory quality score of C3 grade blended sun-cured tobacco
TABLE 7 sensory quality score of B3 grade of sun-cured tobacco
As can be seen by combining the comparison of tables 6 and 7, the blended tobacco leaves obtained in the present application (C3 RS: C3FS6 and B3RS: B3FS 6) have better overall sensory quality than the other, and each obtained the highest or higher score. And the whole sensory quality is obviously improved, mainly embodied in that the fragrance quality is relatively good, the fragrance quantity is sufficient, the penetrability is obviously improved, the miscellaneous gas is less, the concentration strength is moderate, the fineness degree is improved, the conglomeration is slightly improved in a light color group, the stimulation is slightly increased in a light color group, and the rewet is better. And the sense is obviously improved compared with the original grades C3 and B3.
Example 3 blending of yellow tobacco leaf and flue-cured tobacco leaf
Further, the screened sun-cured yellow tobacco blended tobacco leaves (C3 RS: C3FS 6.
Table 8. Sun-cured yellow tobacco blended tobacco leaves C3RS: C3FS6:4, the situation of each sensory quality score after being mixed with the flue-cured tobacco leaves
As can be seen from the results in table 8, the blended tobacco leaves (C3 RS: C3FS 6). Wherein the weight ratio of the mixed tobacco leaves (C3 RS: C3FS6: 4) to the flue-cured tobacco C3F is 3: at 7, the overall sensory quality was particularly prominent, with each term achieving the highest or higher score. And the blended tobacco leaves have the advantages of flue-cured tobacco leaves and sun-cured yellow tobacco leaves, have higher smoking sensory experience and are suitable for further processing.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. The yellow sun-cured tobacco mixed tobacco comprises the following components in parts by weight: 4, and the first tobacco leaf and the second tobacco leaf are obtained by further classifying the tobacco leaves of any one grade of standard grades C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2 of the yellow sun-cured tobacco according to the colors of the tobacco leaves; and, the first tobacco leaf has a color selected from the group consisting of yellowish, positive yellow, golden yellow, or any combination thereof; the second tobacco leaf has a color selected from the group consisting of dark yellow, brown yellow, or any combination thereof.
2. A sun cured yellow tobacco blended leaf according to claim 1, the first and second leaf having a leaf grade of B3 or C3.
3. A yellow sun cured blended tobacco leaf according to claim 1 or 2, comprising in weight ratio 6:4, the first and second tobacco leaves having a leaf rating of B3, and the first tobacco leaf having a color selected from the group consisting of light yellow, positive yellow, gold yellow, or any combination thereof; the second tobacco leaf has a color selected from the group consisting of dark yellow, brown yellow, or any combination thereof.
4. The yellow sun cured blended tobacco leaf of claim 3, wherein the blended tobacco leaf further comprises flue cured tobacco leaf;
preferably, the flue-cured tobacco leaves are flue-cured tobacco leaves of Yunan Daliyun 87 variety C3F, B2F or X2F grade;
preferably, the flue-cured tobacco leaves are flue-cured tobacco leaves of Yunnan Daliyun 87 variety flue-cured C3F grade;
preferably, the blended tobacco leaves comprise 3:7 the sun cured yellow tobacco blended tobacco leaf of claim 3 and a Yunnan Daliyun 87 variety flue-cured C3F grade flue-cured tobacco leaf.
5. A cigarette comprising blended tobacco leaf according to any one of claims 1 to 4.
6. Use of the compounded tobacco leaf of any one of claims 1 to 4 in the preparation of a cigarette or cigarette.
7. A method of screening or preparing blended tobacco leaves for sun-cured yellow tobacco, the method comprising:
(1) Providing a yellow sun-cured tobacco leaf sample, wherein the tobacco leaf sample is selected from any one grade of standard yellow sun-cured tobacco grading C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2;
(2) Further classifying the tobacco leaf samples of the same grade into a first tobacco leaf and a second tobacco leaf according to the color of the tobacco leaves, wherein the color of the first tobacco leaf is selected from light yellow, positive yellow, golden yellow or any combination thereof; the second tobacco leaf is selected from a dark yellow color, a brown yellow color, or any combination thereof;
(3) Mixing the first tobacco leaves and the second tobacco leaves in different weight ratios, and performing chemical component analysis and/or sensory quality evaluation on the obtained mixed tobacco leaves;
(4) And determining the proportion of the first tobacco leaves and the second tobacco leaves according to the required chemical component analysis value and/or sensory quality evaluation value, namely realizing the screening or preparation of the blended tobacco leaves of the sun-cured yellow tobacco.
8. A method of screening or preparing a yellow sun cured blended tobacco leaf according to any one of claims 1 to 3, the method comprising:
(1) Providing a yellow sun-cured tobacco leaf sample, wherein the tobacco leaf sample is selected from any one grade of standard yellow sun-cured tobacco grading C1, C2, C3, X1, X2, B1, B2, B3, F1 or F2;
(2) Further classifying the tobacco leaf samples of the same grade into a first tobacco leaf and a second tobacco leaf according to the color of the tobacco leaves, wherein the color of the first tobacco leaf is selected from light yellow, positive yellow, golden yellow or any combination thereof; the color of the second tobacco leaf is selected from dark yellow, brown-yellow, or any combination thereof;
(3) Mixing the first and second tobacco leaves in a ratio of 6:4, mixing; namely screening or preparing the yellow sun-cured tobacco mixed tobacco leaf as claimed in any one of claims 1 to 3.
9. The method of claim 7 or 8, said chemical component selected from total nitrogen, nicotine, total sugars, reducing sugars, potassium, chlorine, or any combination thereof; the sensory quality assessment is selected from scent quality, scent amount, penetrability, miscellaneous gases, concentration, strength, fineness, lumping, irritation, dry feeling, cleanliness, rewweet, or any combination thereof.
10. The method of any one of claims 7 to 9, the first and second tobacco leaves having a tobacco grade of B3 or C3.
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